How To Install Zinc Strips On Roof

Wouldn t that allow water through the roof.

How to install zinc strips on roof.

The strips are then coated with zinc. These chemicals will create an environment that will prevent moss growth. In november of 2011 i wrote a blog post about using zinc strips to prevent moss from growing on the roof or possibly to kill moss. The roof must be cleaned of moss and or mildew.

In these cases installing a second zinc strip approximately halfway down the roof slope is recommended. By installing the strips on the ridge any water that runs over them will trickle down the roof carrying the zinc chemicals with it. This picture shows nails through the zinc strip. Preventing roof moss with zinc strips in this video this old house general contractor tom silva shares tips for keeping a roof free of moss and mold by this old house.

A good product to consider is roof be clean see www roofbeclean for product information. Using 2 5 or 3 5 wide zincshield install by butting the zinc strip against the ridge vent roof cap or the top most row of shingles at the roof ridge. The zinc metal strips are made from a variety of metals. It looks like they have nailed through the zinc in to the roof.

I conducted a fairly long term experiment by installing zinc strips on a moss covered garage roof and showed before and after photos after the zinc had sixteen months to work its magic. You still need to remove the existing moss algae. Copper strips however do work and should be exposed 2 and placed every 10 up the roof. On roofs with moss algae mildew or fungus the existing growth must first be removed by pressure washing or brushing then the root systems must be chemically treated and destroyed see magazine articles for bleach solution.

Zinc strip will help control the growth of moss and mildew it will. Like rooflover said the zinc strips don t work and they certainly don t work on existing roofs that already have moss algae on them. If the roof extends for more than 14 4 27 m down from the ridge where the zinc strip is installed re growth can occur. This article gives instructions for installing zinc strips at the ridgeline to inhibit moss.

If possible it is best to slide about 1 4 under the roof ridge vent roof cap or the top row. Step 4 maintaining the zinc strips.